It does sound crazy and I won't entertain how realistic it is. But I will say and I think this is fairly common, I now look back on my 18 credit hour undergrad

It does sound crazy and I won't entertain how realistic it is. But I will say and I think this is fairly common, I now look back on my 18 credit hour undergrad semesters, which was considered a moderately heavy load, and I would presently describe it as: I had an abundance of free time. This was pre-med too so not easy courses or anything. College was as much about goofing off with friends and hobbies as it was about coursework. With my present work ethic I think I could have pretty easily doubled the load, and completed a bit over one year of course work per semester without sacrificing my personal life. Again 4 years in 3 semesters sounds crazy. But 4 years in 4 semesters seems totally plausible, so idk.